理论分析
参考答案：
在对调查资料整理、分类、简化、汇总和统计分析的基础上借助于抽象思维对经验材料进行加工制作，从感性认识上升到理性认识的过程。
句型转换。
1. We need two bags of rice for this party. (对画线部分提问)
______ ______ ______ ______ you need for this party?
2. They want to buy 20 apples in the shop.(对画线部分提问)
______ ______ ______ ______they want to buy in the shop?
3. Close your eyes before I call you.(同义句转换)
______ ______ your eyes______I call you.
4. Lily needs some help.(改为一般疑问句)
______Lily ______ ______ help?
5. Finally, Lu Ting finished her math test.(同义句转换)
______ ______, Lu Ting finished her math test.
铁路运单、邮包收据和航空运单共有的特点是()
A.都作成记名抬头
B.都是物权凭证
C.无需承运人签章
D.都有两份正本
